清純的愛戀總讓人心動不已。雪山下，小鎮長大的青年阿布在一次邂逅中認識了城市女孩駱瑤。隨著兩人情愫漸生，他們離別前定下「在星空下修一座木屋」的約定。為實現這個浪漫又不切實際的約定，阿布和身邊夥伴開始了從無到有的造夢之旅⋯⋯曾執導《王家欣》及《某日某月》的劉偉恒導演這次取景於四川，再次講述純真浪漫的愛情故事。

With his nostalgic youth romances Wong Ka Yan and When Sun Meets Moon, Benny Lau has emerged as one of Hong Kong’s most promising new filmmakers in recent years. For his third film, the director brings his flair for telling fresh-faced, pure-hearted stories of serendipitous love to the new setting of Garzê Tibetan Autonomous Prefecture in Sichuan. Free-spirited Bu grew up in the small town of Moxi at the foot of Mt. Gongga. He meets traveler Luo Yao by chance, and the two grow closer while taking in the region’s breathtaking scenery together. Before parting ways, they set the fanciful dream of building a cabin under the stars.